Round|Natural|GIA

3.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1242005486

Certificate GIA 1242005486

Diamond specifications and retailer prices

From £24,190 GBP

CA$45,017 CAD

As of October 30, 2026

Save £15,686 GBP (39%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £39,877 GBP at MOH London · As of October 29, 2026

View at MOH London

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242005486. Listed at 19 retailers as of October 29, 2026, with prices from £24,190 to £39,877, a £15,686 spread on the same certified stone. MOH London lists it at £39,877. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.50

Carat

Colour

SI2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 1242005486

Dimensions9.63 × 9.57 × 6.01 mm

L/W Ratio1.01

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1242005486

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30

Current: £39,877 GBP|Low: £21,144 GBP|High: £39,877 GBP|Avg: £27,010 GBP|+0.4%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

October 30, 2026

Retailer 7£21,144 GBP

Retailer 11£22,012 GBP

Retailer 16£24,190 GBP

Retailer 3£24,342 GBP

Retailer 13£25,447 GBP

Retailer 12£25,637 GBP

Retailer 4£25,856 GBP

Retailer 8£26,336 GBP

Retailer 6£26,455 GBP

Retailer 5£26,771 GBP

Retailer 17£26,771 GBP

Retailer 14£26,895 GBP

Retailer 10£27,349 GBP

Retailer 19£27,659 GBP

Retailer 15£28,964 GBP

Retailer 2£30,201 GBP

Retailer 9£30,212 GBP

Retailer 18£30,267 GBP

MOH London£39,877 GBP

12 data points across 19 retailers

19 retailers£24,190 GBP to £39,877 GBP

Retailer 1

£21,144 GBP

$28,330 USD

Price last confirmed 16 days ago

Retailer 2

£22,012 GBP

$29,493 USD

View

Price last confirmed 17 days ago

B+

Retailer 3

£24,190 GBP

CA$45,017 CAD

View

B+

Retailer 4

£24,342 GBP

$32,615 USD

View

B+

Retailer 5

£25,447 GBP

$34,096 USD

View

B+

Retailer 6

£25,637 GBP

View

B+

Retailer 7

£25,856 GBP

$34,644 USD

View

Retailer 8

£26,336 GBP

$35,287 USD

View

Price last confirmed 16 days ago

B+

Retailer 9

£26,455 GBP

$35,447 USD

View

B+

Retailer 10

£26,771 GBP

$35,870 USD

View

B+

Retailer 11

£26,771 GBP

$35,870 USD

View

B+

Retailer 12

£26,895 GBP

$36,036 USD

View

Retailer 13

£27,349 GBP

$36,644 USD

View

Price last confirmed 17 days ago

B+

Retailer 14

£27,659 GBP

$37,060 USD

View

B+

Retailer 15

£28,964 GBP

$38,808 USD

View

Retailer 16

£30,201 GBP

€38,539 EUR

View

Retailer 17

£30,212 GBP

View

Price last confirmed 16 days ago

Retailer 18

£30,267 GBP

$40,554 USD

View

Most Expensive

MOH London

D6DEA1204 · Oct 29

£39,877 GBP

View

18 more retailers have this diamond

Prices start from £24,190 GBPSave up to £15,686 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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